Journal
PHYSICAL REVIEW LETTERS
Volume 113, Issue 20, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.113.205301
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Funding
- Austrian Science Fund (FWF) through the Spezialforschungsbereich (SFB) FoQuS [F4006-N23]
- European Office of Aerospace Research and Development [FA8655-10-1-3033]
- Engineering and Physical Sciences Research Council [EP/I012044/1]
- EPSRC [EP/I012044/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/I012044/1] Funding Source: researchfish
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We produce ultracold dense trapped samples of (RbCs)-Rb-87-Cs-133 molecules in their rovibrational ground state, with full nuclear hyperfine state control, by stimulated Raman adiabatic passage (STIRAP) with efficiencies of 90%. We observe the onset of hyperfine-changing collisions when the magnetic field is ramped so that the molecules are no longer in the hyperfine ground state. A strong quadratic shift of the transition frequencies as a function of applied electric field shows the strongly dipolar character of the RbCs ground-state molecule. Our results open up the prospect of realizing stable bosonic dipolar quantum gases with ultracold molecules.
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